Species-specific profiles of per- and polyfluoroalkyl substances (PFAS) in small coastal sharks along the South Atlantic Bight of the United States
Species-specific profiles of per- and polyfluoroalkyl substances (PFAS) in small coastal sharks along the South Atlantic Bight of the United States
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美国南大西洋湾沿岸小鲨鱼中全氟烷基物质和多氟烷基物质 (PFAS) 的物种特异性概况
DOI：
10.1016/j.scitotenv.2024.171758
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发表时间：
2024
影响因子：
9.8
通讯作者：
Camacho, Camden G.
中科院分区：
文献类型：
--
作者：
Mehdi, Qaim;Griffin, Emily K.;Esplugas, Juliette;Gelsleichter, Jim;Galloway, Ashley S.;Frazier, Bryan S.;Timshina, Alina S.;Grubbs, R. Dean;Correia, Keyla;Camacho, Camden G.
全氟烷基和多氟烷基物质（PFAS）已在全球范围内广泛用于各种工业和消费品，例如纺织品、消防泡沫和表面涂层材料。地球仪。研究表明，全氟辛烷磺酸在水生食物网中具有很强的累积趋势，主要是因为其具有很高的生物累积潜力和抗降解能力。尽管存在这些担忧，但它们对鲨鱼等海洋捕食者的影响仍然没有得到充分研究。本研究的目的是调查存在的34 PFAS的血浆（n= 315）的四个小沿海鲨鱼栖息在美国（美国）南大西洋湾。在研究的鲨鱼中，（Sphyrna tiburo）的∑PFAS浓度最高（3031 ± 1674 pg g − 1血浆，n= 103），其次是大西洋尖鼻鲨（Rhizoprionodon terraenoorphic，2407 ± 969 pg g − 1，n= 101），blackese shark（Carcharhinus acronotus，1713 ± 662 pg g − 1，n= 83）和细齿鲨（Carcharhinus isodon，1431 ± 891 pg g − 1，n= 28）。尽管全氟辛烷磺酸（PFOS）和全氟辛酸（PFOA）的生产量有所下降，但长链（C8 - C13）全氟烷基酸（PFAAs）经常被检测到，其中全氟辛烷磺酸、全氟癸酸（PFDA）和全氟十三烷酸（PFTrDA）是最主要的全氟烷基酸。此外，雄性的∑PFAS浓度显著高于雌性（p< 0.01），表明某些物种可能存在性别特异性PFAS积累或母体卸载。这项研究的结果强调了在水生/海洋环境中对PFAS进行更广泛的生物监测的紧迫性，以全面了解这些新出现的污染物对海洋动物的影响和命运。
Per- and polyfluoroalkyl substances (PFAS) have gained widespread commercial use across the globe in various industrial and consumer products, such as textiles, firefighting foams, and surface coating materials. Studies have shown that PFAS exhibit a strong tendency to accumulate within aquatic food webs, primarily due to their high bioaccumulation potential and resistance to degradation. Despite such concerns, their impact on marine predators like sharks remains underexplored. This study aimed to investigate the presence of 34 PFAS in the plasma (n= 315) of four small coastal sharks inhabiting the South Atlantic Bight of the United States (U.S). Among the sharks studied, bonnetheads (Sphyrna tiburo) had the highest ∑PFAS concentration (3031 ± 1674 pg g − 1 plasma,n= 103), followed by the Atlantic sharpnose shark (Rhizoprionodon terraenovae, 2407 ± 969 pg g − 1,n= 101), blacknose shark (Carcharhinus acronotus, 1713 ± 662 pg g − 1,n= 83) and finetooth shark (Carcharhinus isodon, 1431 ± 891 pg g − 1,n= 28). Despite declines in the manufacturing of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), the long-chain (C8 – C13) perfluoroalkyl acids (PFAAs) were frequently detected, with PFOS, perfluorodecanoic acid (PFDA), and perfluorotridecanoic acid (PFTrDA) present as the most dominant PFAS. Furthermore, males exhibited significantly higher ∑PFAS concentrations than females in bonnetheads (p< 0.01), suggesting possible sex-specific PFAS accumulation or maternal offloading in some species. The results of this study underscore the urgency for more extensive biomonitoring of PFAS in aquatic/marine environments to obtain a comprehensive understanding of the impact and fate of these emerging pollutants on marine fauna.